Watermarks are perfectly acceptable to have on your images.
The purpose of a watermark is to discourage the unauthorized use of work. It is a matter of intellectual property. A watermark cannot prevent unauthorized use but it makes it much more difficult for others to claim your creative intellectual work as theirs. The more complex or well oriented the watermark the more difficult it is for thieves to hide it and the easier it is for you to prove the work is yours.
While a watermark can be hidden by thieves with much time and patience it is not easy, especially if the mark is over a color dynamic area in the picture. I recommend refraining from placing the watermark over a solid color area or a textured area as those can be easier to cover over. When placing a watermark on your image keep in mind that it should give viewers the opportunity to contact the original owner (you) by including your name, website, or artist handle.
If you’re just starting to consider watermarking, here are some tips on how to effectively make and place a watermark. Uconomix also presents seven ways to watermark your images with the help of the application uMark. There are also several successful artists with beautiful work who balance a watermark in all their shared images whether you see it or not. If other talented artists are including watermarks on their images yet are successfully selling work to make a living then the only person who is allowed to tell you that you have to display your art one way or another is you.
This topic arises because someone once told me I should remove my watermarks completely to increase the crispness of my images for display. I disagreed and am finding a way to facilitate both crisp viewing and a satisfactory placement for my watermark.
Don’t see a method of integration that you like? Conduct more research, try out different placements. We are always constantly growing, changing, and improving. You’ll get the hang of it~
Until next time, happy exploring!